So, if you want to strengthen your abs, an ab roller is a cheap and effective option. Gotting advises that you can also try ...
“Use this for planks, crunches, weighted leg lifts and so much more ... The multi-function system includes an ab roller wheel, resistance ban, two push-up bars, a knee pad, and two handles grips.
If sitting, place feet on top of the leg roller with legs straight ... For example, in lieu of an ab rotation machine, you could work your abs by doing moves like leg lifts, plank shoulders taps, or ...